Aperture 3

I've just downloaded the apple's Aperture 3 trial version
and it seems like I can leave Adobe Camera Raw away and
use only apple's aperture
however, I couldn't find something like the adjustment brush which is in Adobe Camera Raw , I mean I can't choose the brightness of a specific area in the image to be brighter or darker and then I adjust the brightness the way I like using the slider.
In addition, is there any thing works as the lens vignetting ??
more questions will be available as long as I'm exploring Aprerture 3